CVE-2026-20303 | Cisco Catalyst SD-WAN Controller/Catalyst SD-WAN Manager input validation

August 5, 2026 Yanac

A vulnerability marked as very critical has been reported in Cisco Catalyst SD-WAN Controller and Catalyst SD-WAN Manager. This issue affects some unknown processing. Performing a manipulation results in improper input validation.

This vulnerability was named CVE-2026-20303. The attack may be initiated remotely. There is no available exploit.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More